An engineer needs to enable SIDF for a mail flow policy on an incoming listener in Cisco Secure Email Gateway. Drag the actions into the correct sequence to meet the requirement. <DragDrop items={["Set the conformance level to SIDF.","Select the mail flow policy.","Configure the Default Policy Parameters settings.","Set SPF/SIDF Verification to On."]} slots={[{"answer":"Select the mail flow policy.","id":"step1","label":"step 1"},{"answer":"Configure the Default Policy Parameters settings.","id":"step2","label":"step 2"},{"answer":"Set SPF/SIDF Verification to On.","id":"step3","label":"step 3"},{"answer":"Set the conformance level to SIDF.","id":"step4","label":"step 4"}]} explanation={"SPF/SIDF is enabled in the selected incoming mail flow policy’s Default Policy Parameters. Cisco’s procedure turns on SPF/SIDF Verification before selecting the required SIDF conformance level.\n\n**Learn more:** [Cisco Secure Email Gateway Email Authentication guide](https://www.cisco.com/c/en/us/td/docs/security/esa/esa15-5-1/user_guide/b_ESA_Admin_Guide_15-5-1/b_ESA_Admin_Guide_12_1_chapter_010110.pdf)"} reuse={false} />